Chromatic feinting device



(No Model.)

P. J. BOBO. CHROMATIC PRINTING DEVICE.

Patented Oct I. L u z lNVE/l/ T01? Iofiricit JBOZJO- fiTTEST.

m: nomns PEYEns co., moro'umm, wlsmum'ou, n. c.

NITED STATES PATENT ()FFICE.

PATRICK JESSE BOBO, OF DECATUR, INDIANA.

CHROMATIC-PRINTING DEVICE.

SPECIFICATION forming part of Letters Patent No. 461,792, dated October 20, 1891. Application filed December 18, 1890. fierial No. 375,094- (No model.)

To all whom it may concern.-

Be it known that I, PATRICK JESSE BoBo, acitizen of the United States of America, residing at Decatur, in the county of Adams and State of Indiana, have invented certain new and useful Improvements in Chromatic-Printing Devices, of which the following is a specification, reference being had therein to the accompanying drawings.

The object of my invention is to provide an efficient and simple means of printing in colors at one impression; and it consists of the mechanism hereinafterdescribed and claimed.

In the drawings, Figure l is a perspective View of my device. Fig. 2 is a plan View of the same, partly in section. Fig. is a sectional view thereof through the line X X of Fig. 2. Fig. 4 is a sectional View through the line y y of Fig. 2. Fig. 5 is a bottom view thereof with inking-pad removed. Fig. 6 is a sectional view through the line .2 .2 of Fig. 2, and Fig. 7 is a perspective view of the supporting-rack.

Like letters and figures refer to the same parts throughout the several views.

WVithin the rectangular space A, Fig. 6, in stationary frame 8, is located the verticallyinovable rack 9, Fig. '7, having sides 9' and ends 9" to support the type-bar 10, which is journaled in the bearings 11 11 in the ends of rack 9. Attached to oneof the journals of the type-bar, extended at 11 on the outside of the end of the rack, is the ratchet 18, having as many cogs or projections 14 as there are type-faces 12- on the type-bar. In the drawings there are four typefaces and four cogs or projections 011 the ratchet; but it is plain more may be employed, and I do not confine myself to four. The type-faces are cast with or adjusted upon the type-bar in such a position that upon each partial revolution of the type bar (represented by the distance traversed in a single change of position of the cogs or projections upon the ratchet 13) the type-face intended then to print will be brought in position to impress the material intended for reception of the imprint. The type may be of rubber or any desired material.

The ends 9 of the supporting-rack 9 have rack-like slots 9" to mesh with the inner side of cogs 22 on cog-wheels 22, Fig. 6, located and revolving in upper corners of frame 8, Fig. 2. Reciprocating shield is removable and rests upon base 8 of the stationary frame 8, and is supported by two springs v16, one of which only is shown in the drawings, Fig. 1,

the other being on the opposite side of the device. reciprocating upward motion after being pressed down by contact with the platen on each impression. Rack-like slots 23 are also provided in the ends of the shield, similar to those in the ends of the supporting-rack 9, which mesh with the outside of cogs '22" in cog-wheels 22. Depressing the shield 15 will revolve cog-wheels 22 and actuate the supporting-rack 9 in an opposite or upward direction, While on releasing the shield its upward action will communicate a reverse motion to the cog-wheels and will give to the supporting-rack acorresponding downward motion. A step-by-step revolution of the type-bar uniformly in one direction is accomplished by the engagement of the cogs or projections upon the ratchet 13 with the pawl 18, pivoted on the reciprocating shield at 19, Fig. 3. The pawl is held in contact with the ratchet by spring 21. For the purpose of preventing a reverse revolution of the type bar and to steady it in position for' printingI provide a detent-spring or other suitable means, attached to the supportingrack and shown in Fig. 3. The tension of the detent-spring against the ratchet serves to steady the movement of the type-bar in its bearings, and as the end of the detent comes in contact with a cog or projection on the ratchet behind the projection at each step bystep partial revolution no backward or reverse movement of the type-bar is possible. On depressing the shield by contact, as heretofore described, and the consequent elevation of the supporting-rack 9, an engagement between pawl 18 and one of the cogs or projections upon the ratchet- 13 occurs, and'on releasing pressure the shield will be forced upward and the supporting-rack downward by action of springs 16 and the type-bar will be revolved one step, which will be repeated at each impression, thus presenting a new type-face and, if desired, new mat- These springs give to the shield its IOO ter at each partial revolution until one complete revolution of the type-bar has been accomplished.

Ink is supplied to the type by the removable ink-pad 24., located in the bottom of the frame and attached to the shield by clasps 25, having projections 26 to. enter holesin the ends of the shield, prepared for their reception. The ink-pad moves with the shield, to which it is attached, thus meeting the typebar and inking the type. By changing the pad colors may be correspondingly varied. The type may be readily cleansed by removing the reciprocating shield or by holding it depressed while applying a cleansing'fluid to the face thereof.

The height of the rack and shield when the latter is depressed so as to make an imprint with the type upon the type-bar should be that of ordinary type, and the distance the shield should project above the surrounding type when released from pressure should be about three thirty-seconds of an inch, and the supporting-rack carrying the type-bar and type thereon should be depressed three thirtyseconds of an inch below type-height, so as to enable an inkingroller having black or other colored ink to pass freely over the surrounding form and the shield without coming in contact with the type upon the type-bar.

It is plain that if the ink used upon the inking-roller of the ordinary press and that upon the inking-pad 2% be of different colors each impression will produce an imprint in two different colors, and by changing the color of the ink on the inking-pad the color printed by the type-faces 12 will be correspondingly varied.

On the top of shield 15, extending inwardly so as to approach the line where the type on the type-bar will impress the material, 1 provide the border27, which may, if desired, consist of stereotyped letters or words.

My invention may be used in connection with and in making up the ordinary form, and is of great use in printing display advertisements in newspapers and other printed publications, such as catalogues, margins of printed books, almanacs, and other paper or publications which are printed on a printingpress.

Having fully described my invention, what I claim, and desire to secure by Letters Patent, is

1. The stationary frame 8, in combination with the herein described reciprocating shield, cog-wheels 22, and vertically-movable rack within the frame, supporting a type-bar carrying type, substantially as and for the purposes specified.

2. The stationaryframe S, in combination with the herein described reciprocating shield, cog wheels 22, vertically movable rack within the frame, supporting a type-bar carrying type, and the ink-pad 2i, all operatin g together as and for the purposes specified.

3. The combination of the stationary frame 8, reciprocating shield 15,vertically-1novable type-supporting rack within the frame, and typebar 10, having a step-by-step partial revolution in one direction for the purpose of presenting adiiferent type-face at each partial revolution thereof, as and for the purposes specified.

4. The combination of the stationary frame 8, reciprocating shield 15, vertically-movable supportingrack 9 within the frame, type-bar 10, having a step-by-step partial revolution in one direction for the purpose of presenting a different type-face at each partial revolution thereof, and ink-pad 24., as and for the purposes specified.

5. The combination of the herein-described frame 8, reciprocating shield 15,havingracklike slots 23 in the ends thereof, springs 16, cog-wheels 22, supporting-rack 9 within the frame, having rack-like slots in the ends thereof similar to the rack-like slots in the shield, type-bar 10, carrying type, ratchet 13, pawl 18, detent 21, ink-pad 24, and clasps 25, operating together substantially as and for the purposes specified.

In testimony whereof Iaffix my signature in presence of two witnesses.

PATRICK JESSE BOBO. lVitnesses:

CLARK J. LUTZ, ALTON L. DE LtLnIss. 

